Steam-pump



thereof.

UNITED STATES PATENT Fries,

ELI TEIAYER, ()F WORCESTER, MASSACHUSETTS.

STEAM-PUMP.

SPECIFICATION forming part of Letters Patent No. 274,154, dated March 20, 1883.

Application filed March 18, 1882. (No model.)

To all whom it may concern:

Be it-known that I, ELI THAYER, of the city and county of Worcester, and State of Massachusetts, havein vented an Improvemen t in Steam-Pumps, of which the following is a specification.

My invention has reference to steam-pumps in general; and it consists in certain improvements therein, all of which are fully set forth in the following specification and shown in the accompanying drawings, which form part The object of this invention is to simplify the construction of steam-pumps, and thereby cheapen their manufacture; further, to provide a settling-chamber in which sediment may settle and be blown oli'; further,to employ two double valves, one of which is theinduction and the otherthe eduction valve;further, toprovide a watercylinder on each side of the settlingchamber, said cylinder being exposed internally, and without heads; further,to so construct the valves that theyare closed or opened by the combined action of suction or pressure developed in the two cylinders, as more clearly specified hereinafter.

In the drawings, Figure 1 is an elevation of my improved steam pump, with the pump proper in section. Fig. 2 is a sectional elevation of my improved induction-valve.

The casting A is provided with the receiving and settling chamber F, into which the water is fed by the induction or feed pipe G.

Any dirt or other heavy deleterious substance settles and runs into the chamber f, from which it may be blown by valved outlet f. This chamber F opens directly into the adjacent ends of the pump or water cylinders B, the said openings being provided with valveseats, against which the faces h h of the double induction-valve H seat themselves, alternately closing the aperture to one cylinder and opening the aperture to the other. This valve H is made as follows: One of the faces, h, is provided with a hub, If, and wings H, and the other face, It, fits against the said huh [I and wings H,and is firmly secured in placebya bolt, 15*, and through the hub 12. and bolt k the pistonrod 0 works, and is packed by stuffing-box k to prevent water passing from one side of the valve to the other. In practice this packingbox it should be on the end farthest from the steam'cylinder, to more easily repack it when necessary.

Itigidly secured to the piston-rod U are the.

may be also a settling-chamber, and the impurity blown oti by opening t".

K isthe air-chamber, and opens into the chamber I.

L is the eduction main or discharge.

. As the pistons D move in the direction indicated by'the arrow the water from chamber F presses upon the innerside of valve-face it, there being suction on the other side, and the water in end cylinder, B, presses upon the outer side of face h of the valve H, moving it,

' as shown. Water is then forced from the end cylinder through the valve J, as shown, into hand-holes closed by caps '13. The chamber I the chamber I and pipe L. When the pistonrod moves in the other direction the reverse operation takes place.

Having now described my invention, whatI claim as new, and desire to secure by Letters Patent, isv y 1. In a steam-pump, a central casting provided with a support, and in which the valves are located, having on each side as open cylinder, said cylinders being in line with one another, the induction-chamber in said central casting occupying the entire space between said cylinders, substantially as and. for the purpose specified.

2. The central part, A, provided with water-induction chamber F, into which the supply-pipe G opens, in combination with two water-cylinders, located one on each side of said part A and in line with each other, and 100 an induction-valve which alternately admits J, located therein, and adapted to alternately 20 water from said chamber F to each ofrsaid water-cylinders.

3. In a steam-pump, the central part, A, having induction-chamber F, ports d, eductionchamber 1, piston-rod O, pistons D D, watercylinders B B, located on opposite sides of said piece A, double induction-valve H, and double eduction-valve J.

4. Ina steam-pnmp, the central inductionchamber, F, provided at the bottom with set tling-chamberf, furnished with blow-offf.

5. In a steam-pump, the combination of part A, having ind notion-chamber F and settlingchamber f, cylinders B B, piston-rod (Lextending through part A, pistons D D, induc-' tion-valve H,surrounding said piston-rod O, and adapted toadmit water alternately to each cylinder, ports (Z (l, chamber I, eduction-valve open ports at d, with chamber I and steamcylindor E.

6. The induction-valve, which consists of the two oppositely-arranged valve-faces h it, connected together by a hub or its equivalent, in combination with piston-rod O and packingbox h 7. The induction-valve H, which consists of the valve-face h, cast solid with hub I13, and wings H, in combination with the valve-face h, screw or bolt h, piston-rod O, and packing or stuffing box h In testimony of which invention I hereunto set my hand.

ELI THAYER. Witnesses:

R. M. HUNTER, R. S. CHILD, Jr. 

